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1
Hrádek, Jan. „Procesní parametry při navařování Inconelu 625“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443210.
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The research is focused on cladding of inconel 625 using the MAG - CMT method. It was found that welding without an oscillation does not create the necessary geometry to establish additional layers. When welding with an oscillation, it was researched that the current between 150 and 200 A appears most appropriate in the synergistic mode for welding inconel 625. The resulting weld bead was made at a current of 190 A with pulse dynamics correction set to -4 and correction of arc length to +10 and welding speed of 315 mm per minute.The weld bead was not ideal mainly due to insufficient height. The improvement of results could be achieved by set oscilation with fluent change in acceleration. Because of the time options and difficulty of programming it was used only constant speed for all experiments.
2
Palaszewski, Bo. „On multiple test procedures for finding deviating parameters /“. Göteborg : Stockholm, Sweden : University of Göteborg ; Almqvist & Wiksell International [distributor], 1993. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=005857463&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Brodd, Adam, und Andreas Eriksson. „User perception on procedurally generated cities affected with a heightmapped terrain parameter“. Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18491.
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Context: Procedural content generation shortened PCG is a way of letting the computer algorithmically generate data, with little input from programmers. Procedural content generation is a useful tool for developers to create game worlds, content and much more, which can be tedious and time-consuming to do by hand.Objectives: The procedural generation of both a city and height-mapped terrain parameter using Perlin noise and the terrain parameters effect on the city is explored in this thesis. The objective is to find out if a procedurally generated city with a heightmap parameter using Perlin noise is viable for use in games. Methods: An implementation generating both a height-mapped terrain parameter and city using Perlin noise has been created, along with that a user survey to test the generated city and terrain parameters viability in games. Results: This work successfully implemented an application that can generate cities affected with a heightmapped terrain parameter that is viable for use in games. Conclusions: This work concludes that it is possible to generate cities affected with a height-mapped terrain parameter by utilizing the noise algorithm Perlin noise. The generated cities and terrains are both viable and believable for use in games.
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BAT, ASSIA. „Incidence des procedures de prelevement et des procedures d'essais sur les parametres geotechniques mesures“. Caen, 1999. http://www.theses.fr/1999CAEN2027.
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Les resultats des essais triaxiaux et dometriques effectues sur une argile marine francaise (site de cran) sont analyses pour determiner l'influence de l'outil de prelevement et de sa mise en uvre sur les resultats des essais de laboratoire. Cette etude se limite a deux objectifs : l'analyse du remaniement des echantillons preleves et l'examen de l'incidence des procedures utilisees dans la realisation de l'essai dometrique (temperature de l'essai, frottement sur la bague dometrique, taux et duree de chargement). L'analyse montre qu'il y a une influence du mode de prelevement sur les caracteristiques de compressibilite et de resistance. Les modules de deformation augmentent avec le diametre du carottier et avec l'amelioration du mode de prelevement. Des variations, relativement mineures, des procedures de l'essai dometrique (fluctuation de la temperature de 5\c, traitement de surface) n'ont pas de reel impact sur la compressibilite du sol. L'effet du taux de chargement et de sa duree n'a pu etre apprecie. Tous ces effets se superposent a une certaine dispersion des resultats due a la variabilite spatiale naturelle du sol en place.
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Wang, Rui. „Generalizing Multistage Partition Procedures for Two-parameter Exponential Populations“. ScholarWorks@UNO, 2018. https://scholarworks.uno.edu/td/2510.
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ANOVA analysis is a classic tool for multiple comparisons and has been widely used in numerous disciplines due to its simplicity and convenience. The ANOVA procedure is designed to test if a number of different populations are all different. This is followed by usual multiple comparison tests to rank the populations. However, the probability of selecting the best population via ANOVA procedure does not guarantee the probability to be larger than some desired prespecified level. This lack of desirability of the ANOVA procedure was overcome by researchers in early 1950's by designing experiments with the goal of selecting the best population. In this dissertation, a single-stage procedure is introduced to partition k treatments into "good" and "bad" groups with respect to a control population assuming some key parameters are known. Next, the proposed partition procedure is genaralized for the case when the parameters are unknown and a purely-sequential procedure and a two-stage procedure are derived. Theoretical asymptotic properties, such as first order and second order properties, of the proposed procedures are derived to document the efficiency of the proposed procedures. These theoretical properties are studied via Monte Carlo simulations to document the performance of the procedures for small and moderate sample sizes.
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Korchaiyapruk, Attasit 1977. „Development of framework for soil model input parameter selection procedures“. Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/80944.
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Wu, Ying-keh. „Empirical Bayes procedures in time series regression models“. Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/76089.
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In this dissertation empirical Bayes estimators for the coefficients in time series regression models are presented. Due to the uncontrollability of time series observations, explanatory variables in each stage do not remain unchanged. A generalization of the results of O'Bryan and Susarla is established and shown to be an extension of the results of Martz and Krutchkoff.
Alternatively, as the distribution function of sample observations is hard to obtain except asymptotically, the results of Griffin and Krutchkoff on empirical linear Bayes estimation are extended and then applied to estimating the coefficients in time series regression models. Comparisons between the performance of these two approaches are also made.
Finally, predictions in time series regression models using empirical Bayes estimators and empirical linear Bayes estimators are discussed.Ph. D.
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Miller, David Michael. „Developing a procedure to identify parameters for calibration of a vissim model“. Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28135.
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Rosenbloom, E. S. „Selecting the best of k multinomial parameter estimation procedures using SPRT“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0005/MQ45119.pdf.
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Ezzet, F. L. „Applied sequential methods : Robustness studies and procedures for detecting parameter changes“. Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353915.
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McQuaid, J. Robert (John Robert). „Machine Combination Analysis Procedure for Selecting Optimal Factory Cell Composition“. Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278849/.
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Kábele, Břetislav. „Metody detekce funkcí při zpětném překladu kódu“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236601.
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This work describes methods of functions detection in decompilation. It contains basic information about reverse engineering and its applications in computer science and beyond. Decompiler developed by research group Lissom at FIT VUT Brno is introduced. The main objective is to elucidate several methods of functions detection, discuss their advantages and disadvantages, and identify the problems of functions detection. After detecting the start, end and body of function, it is needed to find the parameters and return values. There are some algorithms presented in this area. The output of this thesis is design and implementation of architecture independent function detection and parameter detection.
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Burnham, Maria Noelle. „Establishing Normal Psychoacoustic Parameters Using Adaptive Procedures for the Clinical Assessment of Psychoacoustic Phenomenon“. BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/8835.
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Masking Level Difference (MLD) tests are an established component of auditory processing test batteries; however, normative data for these tests vary according to procedure. In this study, forty normal, native-English speaking adults between the ages of 18 and 26 were tested for MLD via a newly developed computer software program using both an adaptive procedure (MLDA) and a Bekesy procedure (MLDB). The results from the two procedures were analyzed for sex differences and compared with each other. For both the MLDA and MLDB, the results showed statistically significant sex differences in the masked thresholds used to obtain the MLD (NoSo and NoSπ), but no significant difference in the calculated MLD value (NoSo - NoSπ). These results suggest that since the MLD was similar for both sexes, the normative data need not be reported separately by sex. The results also showed statistically significant differences between procedures, with the MLDA procedure producing higher MLDs than the MLDB procedure. The MLDA procedure lent itself to a d´ analysis, which could not be determined using MLDB due to the nature of a Bekesy assessment. For MLDA, d´ = 1.4, test sensitivity = 96.4%, and test specificity = 60.3%. The results of this study indicate that MLDA is a better testing procedure due to MLDA’s higher MLD average and the statistical data available (d´, and measures of sensitivity and specificity) when using the MLDA procedure.
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Abdelfattah, Faisal A. „RESPONSE LATENCY EFFECTS ON CLASSICAL AND ITEM RESPONSE THEORY PARAMETERS USING DIFFERENT SCORING PROCEDURES“. Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1179851182.
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Fischer, Manfred M., Katarina Hlavácková-Schindler und Martin Reismann. „A Gobal Search Procedure for Parameter Estimation in Neural Spatial Interaction Modelling“. WU Vienna University of Economics and Business, 1998. http://epub.wu.ac.at/4149/1/WSG_DP_6398.pdf.
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Parameter estimation is one of the central issues in neural spatial interaction modelling.
Current practice is dominated by gradient based local minimization techniques. They
find local minima efficiently and work best in unimodal minimization problems, but
can get trapped in multimodal problems. Global search procedures provide an
alternative optimization scheme that allows to escape from local minima. Differential
evolution has been recently introduced as an efficient direct search method for
optimizing real-valued multi-modal objective functions (Storn and Price 1997). The
method is conceptually simple and attractive, but little is known about its behaviour in
real world applications. This paper explores this method as an alternative to current
practice for solving the parameter estimation task, and attempts to assess ist robustness,
measured in terms of in-sample and out-of-sample performance. A benchmark
comparison against backpropagation of conjugate gradients is based on Austrian
interregional telecommunication traffic data. (authors' abstract)Series: Discussion Papers of the Institute for Economic Geography and GIScience
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Woelz, Thomas Anatol da Rocha Vaidya Manish. „A comparison of discounting parameters obtained through two different adjusting procedures bisection and up-down /“. [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5108.
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Woelz, Thomas Anatol da Rocha. „A Comparison of Discounting Parameters Obtained Through Two Different Adjusting Procedures: Bisection and Up-Down“. Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5108/.
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The study compared delay discounting in adult humans using two different methods of adjustments. Both methods used hypothetical choices of monetary outcomes. One involved adjustments using a fixed sequence of ascending or descending amounts, the other used a bisection algorithm in which the changes in amounts varied as a function of the subjects' choices. Two magnitudes of delayed outcomes were used: $1,000 and $10,000. A within subject design was used to compare indifference curves and discounting measures across the two adjusting procedures. Twenty four subjects were divided in two groups and exposed to the procedures in opposite order, to account for sequence effects. Results from within subject comparisons showed no systematic differences between procedures.
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Dao, Steve Gia 1973. „Procedure for optimal D.C. parameter extraction for hot-carrier degradation model calibration and verification“. Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47435.
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Turley, Carole. „Calibration Procedure for a Microscopic Traffic Simulation Model“. Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1747.pdf.
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Nam, Kyungdoo T. „A Heuristic Procedure for Specifying Parameters in Neural Network Models for Shewhart X-bar Control Chart Applications“. Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc278815/.
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This study develops a heuristic procedure for specifying parameters for a neural network configuration (learning rate, momentum, and the number of neurons in a single hidden layer) in Shewhart X-bar control chart applications. Also, this study examines the replicability of the neural network solution when the neural network is retrained several times with different initial weights.
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Alyaseri, Isam. „QUALITATIVE AND QUANTITATIVE PROCEDURE FOR UNCERTAINTY ANALYSIS IN LIFE CYCLE ASSESSMENT OF WASTEWATER SOLIDS TREATMENT PROCESSES“. OpenSIUC, 2014. https://opensiuc.lib.siu.edu/dissertations/795.
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In order to perform the environmental analysis and find the best management in the wastewater treatment processes using life cycle assessment (LCA) method, uncertainty in LCA has to be evaluated. A qualitative and quantitative procedure was constructed to deal with uncertainty for the wastewater treatment LCA studies during the inventory and analysis stages. The qualitative steps in the procedure include setting rules for the inclusion of inputs and outputs in the life cycle inventory (LCI), setting rules for the proper collection of data, identifying and conducting data collection analysis for the significant contributors in the model, evaluating data quality indicators, selecting the proper life cycle impact assessment (LCIA) method, evaluating the uncertainty in the model through different cultural perspectives, and comparing with other LCIA methods. The quantitative steps in the procedure include assigning the best guess value and the proper distribution for each input or output in the model, calculating the uncertainty for those inputs or outputs based on data characteristics and the data quality indicators, and finally using probabilistic analysis (Monte Carlo simulation) to estimate uncertainty in the outcomes. Environmental burdens from the solids handling unit at Bissell Point Wastewater Treatment Plant (BPWWTP) in Saint Louis, Missouri was analyzed. Plant specific data plus literature data were used to build an input-output model. Environmental performance of an existing treatment scenario (dewatering-multiple hearth incineration-ash to landfill) was analyzed. To improve the environmental performance, two alternative scenarios (fluid bed incineration and anaerobic digestion) were proposed, constructed, and evaluated. System boundaries were set to include the construction, operation and dismantling phases. The impact assessment method chosen was Eco-indicator 99 and the impact categories were: carcinogenicity, respiratory organics and inorganics, climate change, radiation, ozone depletion, ecotoxicity, acidification-eutrophication, and minerals and fossil fuels depletion. Analysis of the existing scenario shows that most of the impacts came from the operation phase on the categories related to fossil fuels depletion, respiratory inorganics, and carcinogens due to energy consumed and emissions from incineration. The proposed alternatives showed better performance than the existing treatment. Fluid bed incineration had better performance than anaerobic digestion. Uncertainty analysis showed there is 57.6% possibility to have less impact on the environment when using fluid bed incineration than the anaerobic digestion. Based on single scores ranking in the Eco-indicator 99 method, the environmental impact order is: multiple hearth incineration > anaerobic digestion > fluid bed incineration. This order was the same for the three model perspectives in the Eco-indicator 99 method and when using other LCIA methods (Eco-point 97 and CML 2000). The study showed that the incorporation of qualitative/quantitative uncertainty analysis into LCA gave more information than the deterministic LCA and can strengthen the LCA study. The procedure tested in this study showed that Monte Carlo simulation can be used in quantifying uncertainty in the wastewater treatment studies. The procedure can be used to analyze the performance of other treatment options. Although the analysis in different perspectives and different LCIA methods did not impact the order of the scenarios, it showed a possibility of variation in the final outcomes of some categories. The study showed the importance of providing decision makers with the best and worst possible outcomes in any LCA study and informing them about the perspectives and assumptions used in the assessment. Monte Carlo simulation is able to perform uncertainty analysis in the comparative LCA only between two products or scenarios based on the (A-B) approach due to the overlapping between the probability distributions of the outcomes. It is recommended to modify it to include more than two scenarios.
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Dufresne, Jean-Louis. „Etude et developpement d'une procedure experimentale pour l'identification des parametres d'un modele thermique de capteurs solaires a air en regime dynamique“. Paris 7, 1987. http://www.theses.fr/1987PA077107.
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Construction d'un banc d'essais permettant de tester le fonctionnement d'un capteur solaire a air en regime dynamique (variation de l'eclairement et du debit dans le capteur). Analyse des donnees d'ensoleillement recueillies toutes les minutes pendant un an a orsay (france). Methode d'identification de dix parametres libres d'un modele de capteur a air en regime dynamique, basee sur la mesure d'une seule sortie du systeme: la puissance extraite. Discussion de l'estimation des erreurs de mesure. Application a un capteur industriel (capteur acret)
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McClaran, Robin R. „INVESTIGATING THE IMPACT OF INTERACTIVE APPLETS ON STUDENTS’ UNDERSTANDING OF PARAMETER CHANGES TO PARENT FUNCTIONS: AN EXPLANATORY MIXED METHODS STUDY“. UKnowledge, 2013. http://uknowledge.uky.edu/stem_etds/2.
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The technology principle in the Principles and Standards for School Mathematics (NCTM, 2000) states that technology plays an important role in how teachers teach mathematics and in how students learn mathematics. The purpose of this sequential explanatory mixed-methods study was to examine the impact of interactive applets on students’ understanding of parameter changes to parent functions. Students in the treatment classes were found to have statistically significantly higher posttest scores than students in the control classes. Although the data analysis showed a statistically significant difference between classes on procedural understanding, no statistically significant difference was found with regard to conceptual understanding. Student and teacher interviews provided insight on how and why the use of applets helped or hindered students’ understanding of parameter changes to parent functions.
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Lerche, Veronika [Verfasser], und Andreas [Akademischer Betreuer] Voß. „Parameter Estimation in Diffusion Modeling: Guidelines on Requisite Trial Numbers and Estimation Procedures / Veronika Lerche ; Betreuer: Andreas Voß“. Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180737725/34.
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Barbosa, AndrÃa Lopes. „Procedimentos dolorosos e alteraÃÃes nos parÃmetros fisiolÃgicos em recÃm-nascidos sob oxigenoterapia“. Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=4708.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorRecÃm-nascidos (RNs) que apresentam funÃÃo pulmonar prejudicada, seja pela prematuridade ou por algum diagnÃstico que interfira no sistema respiratÃrio, necessitam, geralmente, de algum tipo de oxigenoterapia. Objetivou-se avaliar os parÃmetros fisiolÃgicos (FR, FC, pulso e SpO2) na execuÃÃo de alguns procedimentos dolorosos (aspiraÃÃo do TOT/VAS, coleta de gasometria, passagem de cateter central de inserÃÃo perifÃrica-PICC e retirada de curativo) realizados pelos(as) enfermeiros(as) em RNs submetidos à oxigenoterapia em uma Unidade de Terapia Intensiva Neonatal (UTIN). Para tanto, realizou-se um estudo longitudinal do tipo antes e depois, de carÃter quantitativo, em uma UTIN de uma instituiÃÃo pÃblica de referÃncia na cidade de Fortaleza-CearÃ, durante o perÃodo de dezembro de 2008 a junho de 2009. Fizeram parte da amostra 125 RNs com, no mÃnimo, seis horas de vida e internados em leitos de alto risco, que utilizavam alguma forma de oxigenoterapia por um perÃodo mÃnimo de seis horas e que se encontravam clinicamente estÃveis. A coleta de dados efetivou-se por meio da observaÃÃo sistemÃtica e os dados foram registrados em formulÃrios, contemplando algumas variÃveis independentes, tais como os procedimentos dolorosos realizados pelos enfermeiros(as) e algumas variÃveis dependentes, como os parÃmetros fisiolÃgicos de FR, FC, juntos aos visualizados no monitor durante os procedimentos (pulso, SpO2). AlÃm destas variÃveis, estudou-se tambÃm as caracterÃsticas de base dos RNs quanto Ãs condiÃÃes de nascimento (peso ao nascer, sexo, tipo de parto, Apgar, Capurro) e durante a internaÃÃo na UTIN (data e horÃrio da internaÃÃo, data do inÃcio da utilizaÃÃo e modalidade de oxigenoterapia instalada ao ser admitido na UTIN, modalidade de oxigenoterapia e peso no momento da coleta, acomodaÃÃo, dieta, medicaÃÃo). Tais dados foram adquiridos por meio do prontuÃrio, com o propÃsito de correlacionÃ-los com as referidas variÃveis. Os resultados mostraram que 92,8% dos RNs eram prÃ-termo e 7,3%, a termo, sendo que 56,8% nasceram de parto cesÃrea e 43,2%, de parto vaginal. Quanto ao peso dos bebÃs estudados, 92,0% pesaram abaixo de 2500g e apenas 7,2%, acima de 2500g. As hipÃteses diagnÃsticas mais presentes foram prematuridade (93,6%) e SÃndrome do Desconforto RespiratÃrio-SDR, (52,8%). Ao avaliar o conjunto de parÃmetros fisiolÃgicos para os quatro procedimentos pesquisados, houve alteraÃÃes (p<0,05) de FR e FC para os RNs em Oxi-Hood e CPAP e de pulso (p<0,05) para os RNs em Oxi-Hood, CPAP e VM, sendo a SpO2 o Ãnico parÃmetro que nÃo sofreu variaÃÃo significativa (p>0,05) na prÃtica de aspiraÃÃo do TOT/VAS. Na gasometria, houve variaÃÃes (p<0,05) de todos os parÃmetros fisiolÃgicos, porÃm, para tal procedimento, as alteraÃÃes foram diferentes em cada modalidade de oxigenoterapia, ocorrendo variaÃÃes de FC, pulso e SpO2 nos RN em Oxi-Hood e alteraÃÃes de FR e pulso nos RNs em VM. Entretanto, na passagem de cateter percutÃneo e na retirada de curativo, nÃo houve alteraÃÃes estatisticamente significantes (p>0,05). PropÃe-se aos enfermeiros(as) desenvolverem intervenÃÃes que possam manter as variaÃÃes dos parÃmetros de FR, FC, pulso e SpO2 dentro da faixa de normalidade na execuÃÃo destes procedimentos.
Newborn infants that have impaired lung function because of prematurity or any other diagnosis that interferes in the respiratory system, usually need some type of oxigenotherapy. The objectives of this study were to evaluate physiological parameters (RR, HR, Pulse, SpO2) in neonates submitted to oxigenotherapy in a Neonatal Intensive Care Unit (NICU) during the execution of some painful procedures carried out by nurses (orotracheal suction, upper airway suction, blood collectium to gasometry, insertion of a Peripherally Inserted Central Catheter â PICC - and withdrawing of curative). For this purpose, it was developed a before and after longitudinal and quantitative study in a Neonatal Intensive Care Unit of a public institution of reference in the city of Fortaleza-Ceara, in the period of December 2008 to June 2009. The sample was composed of 125 clinically stable newborns hospitalized in high-risk beds with at least six hours of life, and submitted to some type of oxigenotherapy for at least six hours. The data collecting was accomplished by systematic observation and the data were recorded in research forms that contained some independent variables, such as painful procedures carried out by nurses and some dependent variables such as the physiological parameters, like RR, HR and others that were visualized in the cardiac monitor during the procedures (pulse, SpO2). Additionally to these variables, it was studied both characteristics of the newborns regarding the birth conditions (birth weight, gender, type of labour, Apgar score, capurro) and regarding the period of hospitalization in the NICU (date and time of hospitalization, date and type of oxigenotherapy when the baby was admitted in the NICU, oxigenotheray modality and newborn weight at the time of the data collection, accommodation, diet and medication). These data were obtained through the medical charts, with the purpose of correlating them to those variables. The results showed that 92,8% of the neonates were preterm infants and 7,3% were term infants. Regarding the type of labor, 56,8% of the babies were delivered by caesarean section and 43,2% of them born by vaginal labor. According to the weight of the babies under the study, 92,0% weighted below 2500g while only 7,2% were above 2500g. The most common diagnostic hypotheses founded were prematurity (93,6%) and Respiratory Distress Syndrome - RDS (52,8%). The evaluation of the physiological parameters of the four procedures accessed in this study showed some variations (p<0,05) of RR and HR in the newborns using hood and CPAP, and variation of pulse (p<0,05) for the newborns in hood, CPAP and MV; however, the SpO2 was the only parameter that did not suffer any significant variation (p>0,05) regarding the suction of either orotracheal tube or upper airway. Concerning the gasometry, variations were found (p<0,05) in all physiological parameters; nevertheless, the alterations related to this procedure were different for each oxigenotherapy modality, occurring changes in HR, pulse and SpO2 in newborn using hood, and alterations in RR and pulse in neonates under MV; however, regarding the insertion of a PICC and the withdrawing of curative, no statistically significance alterations were found (p>0,05). It is proposed to the nurses to develop interventions that can keep the variations of the parameters of RR, HR, pulse and SpO2 in normal levels during the execution of these procedures.
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Malde, Rahil. „An analysis of leakage parameters of individual leaks on a pressure pipeline through the development and application of a standard procedure“. Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/13726.
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Water is a vital and scarce resource. Providing a sustainable and efficient means of transporting water is essential to the wellbeing of humankind. Most water distribution systems worldwide are ageing and deteriorating, as a result, leakage is a common problem. Modern water distribution systems use a variety of methods to minimise leakage, one of them is pressure management. However, the relationship between leakage and pressure is a complex one. The goals of this study were to develop a standard experimental procedure to determine the leakage parameters of a pipe with an individual leak, and to test a series of pipes using the newly developed procedure to determine their leakage parameters. There have been numerous experimental investigations into the leakage parameters; however, these investigations have variation in their methodologies. Therefore, developing a standard procedure will provide a consistent method for the accurate determination of the leakage parameters. Leakage parameters are important as they help to improve the understanding of the relationship between leakage and pressure. They are also important for use in the two main equations used to relate leakage and pressure, i.e. the N1 equation and the FAVAD equation. The determination of a variety of leakage parameters will help to determine whether both equations explain the behaviour of a variety of pipe samples, and which equation is better suited for use in leakage prediction.
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Kaštyl, Petr. „Zhodnocení a návrhy na zlepšení poskytování hypotéčních úvěrů v Raiffeisenbank, a.s“. Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2007. http://www.nusl.cz/ntk/nusl-221486.
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The master’s thesis deals with the analysis of the present state, the finding of the contingent deficiencies and the presentation of the improvement suggestions including the concrete measures in granting mortgage credits by Raiffeisenbank, Inc. with a view to advance the competitive strength of the company in the field of mortgage banking. The evaluation and the improvement suggestions are conducted in several component units: in the fields of technical parameters, credit procedure and sales promotions. A partial aim of the thesis concerns the introduction of a new product for the extension of the current supply.
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Huang, Changwu. „Kriging-assisted evolution strategy for optimization and application in material parameters identification“. Thesis, Normandie, 2017. http://www.theses.fr/2017NORMIR05.
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Afin de réduire le coût de calcul pour des problèmes d'optimisation coûteuse, cette thèse a été consacrée à la Stratégie d'Evolution avec Adaptation de Matrice de Covariance assistée par modèle de Krigeage (KA-CMA-ES). Plusieurs algorithmes de KA-CMA-ES ont été développés et étudiés. Une application de ces algorithmes KA-CMA-ES développés est réalisée par l'identification des paramètres matériels avec un modèle constitutif d'endommagement élastoplastique. Les résultats expérimentaux démontrent que les algorithmes KA-CMA-ES développés sont plus efficaces que le CMA-ES standard. Ils justifient autant que le KA-CMA-ES couplé avec ARP-EI est le plus performant par rapport aux autres algorithmes étudiés dans ce travail. Les résultats obtenus par l'algorithme ARP-EI dans l'identification des paramètres matériels montrent que le modèle d'endommagement élastoplastique utilisé est suffisant pour décrire le comportement d'endommage plastique et ductile. Ils prouvent également que la KA-CMA-ES proposée améliore l'efficace de la CMA-ES. Par conséquent, le KA-CMA-ES est plus puissant et efficace que CMA-ES pour des problèmes d'optimisation coûteuseIn order to reduce the cost of solving expensive optimization problems, this thesis devoted to Kriging-Assisted Covariance Matrix Adaptation Evolution Strategy (KA-CMA-ES). Several algorithms of KA-CMA-ES were developed and a comprehensive investigation on KA-CMA-ES was performed. Then applications of the developed KA-CMA-ES algorithm were carried out in material parameter identification of an elastic-plastic damage constitutive model. The results of experimental studies demonstrated that the developed KA-CMA-ES algorithms generally are more efficient than the standard CMA-ES and that the KA-CMA-ES using ARP-EI has the best performance among all the investigated KA-CMA-ES algorithms in this work. The results of engineering applications of the algorithm ARP-EI in material parameter identification show that the presented elastic-plastic damage model is adequate to describe the plastic and ductile damage behavior and also prove that the proposed KA-CMA-ES algorithm apparently improve the efficiency of the standard CMA-ES. Therefore, the KA-CMA-ES is more powerful and efficient than CMA-ES for expensive optimization problems
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Buckley-Smith, Marion. „The Use of Solubility Parameters to Select Membrane Materials for Pervaporation of Organic Mixtures“. The University of Waikato, 2006. http://hdl.handle.net/10289/2625.
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Pevaporation is a method for separating volatile components from liquid mixtures at ambient temperatures. The paint processing industry uses Hansen solubility parameters (HSP) to indicate polymer solubility. The potential of this method to predict solvent-polymer affinity was investigated for screening potential membrane materials for the pervaporation of a model solution containing linalool and linalyl acetate (major components of lavender essential oil), in ethanol. Published HSP values were collated for various polymers, and statistically analysed to determine variations in HSP values for polymer species. An investigation of published research into pervaporation of organic/organic binary solutions separated by homogeneous membranes indicated that the solvent whose HSP value was closest to that of the polymer would preferentially permeate. This relationship did not always hold for halogenated solvents or aqueous/organic solutions. Conflicting literature regarding the relationship between solvent uptake by polymers and HSP relative energy differences was resolved using a logarithmic relationship between these two parameters. The following membranes were selected, using their HSP to indicate their potential to interact with lavender oil components: Polyamide (PA: 26.9 micro;m), Polycarbonate (PC: 20.5 micro;m), Poly(ether imide) (PEI: 29.2 micro;m), Poly(ether sulphone) (PES: 27.6 micro;m), Polyethylene (HDPE: 10 micro;m, LDPE: 13-30 micro;m), Polyimide (PI: 30.0 micro;m), Poly(methyl methacrylate) (PMMA: 50 micro;m), Polypropylene (PP: 15.9 micro;m), and Poly(tetrafluoro ethylene) (PTFE: 26.7 micro;m). The HSP (dispersive, polar hydrogen bonding components) for each membrane were calculated using the mean value obtained from swelling experiments, group contribution (calculated using Hoftyzer-Van Krevelen, Hoy and Beerbower methods), refractive indices (dispersive component), dielectric constants (polar component), and published HSP values. Pervaporation experiments investigated the effect of membrane thickness, process temperature, permeate pressure, impinging jet heights, feed flow rates and concentrations, and pre-soaking the membrane; on flow rate and selectivity in a polyethylene membrane. Membrane thickness was the dominant factor in membrane selectivity; the thinnest membranes (11.3-14.8 micro;m) had much poorer selectivity than membranes gt;24.7 micro;m. Temperatures between 22-34ordm;C, permeate pressure lt;10 kPa, impinging jet heights between 0.36-3.36 mm, feed flow rates between 541-1328 mL/min and concentrations between 1.78-6.01 % v/v of linalool and linalyl acetate in ethanol did not significantly affect selectivity. Flow rates increased with operating temperature, permeate pressure, and impinging jet heights. However, feed flow rate and concentration had no effect on membrane flux rate. Pre-soaking the membrane reduced the time to reach steady-state. Selected membranes were further investigated under standard operating conditions (permeate temperature 30ordm;C, permeate pressure lt;10 kPa, impinging jet height 1.36 mm, feed flow rate 804 mL/min and feed concentration of 5% v/v of linalool and linalyl acetate in ethanol). PMMA completely disintegrated in feed solution, and PC was too brittle to make an effective homogeneous membrane. PA, PC, PEI and PTFE had the highest efficiency (selectivity x flow rate) in their homogeneous form. However, PEI, PI and PTFE had the greatest selectivity, thus further trials should be done to improve stability and flow rates through these membranes. Pervaporation selectivity did not always follow trends predicted by HSP. Although polymers such as PA, PEI, PES, and PI preferentially permeated linalool as predicted, PC, PP and PTFE did not preferentially permeate linalyl acetate. This may have been due to the difference in size and diffusivity of these molecules (linalyl acetate, the larger molecule, did not follow the sorption selectivity predictions), or reliability of literature HSP values and those calculated by group contribution. This research shows that HSP is a good screening method for pervaporation membranes, especially where the molecules being separated are of comparable size. Polymers that have HSP close to the desired component and not to other components tend to have the best selectivity and flux characteristics. However, diffusion is an important factor, and is not completely accounted for by HSP. Recommendations for further research include: carrying out pervaporation analyses of selected polymers using pure lavender essential oil; modifying polymers to form asymmetric or composite membranes with improved permeation characteristics; and potential use of thin channel inverse gas chromatography to determine a more accurate HSP which includes diffusivity.
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Batur, Demet. „Variance Estimation in Steady-State Simulation, Selecting the Best System, and Determining a Set of Feasible Systems via Simulation“. Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10541.
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In this thesis, we first present a variance estimation technique based on the standardized time series methodology for steady-state simulations. The proposed variance estimator has competitive bias and variance compared to the existing estimators in the literature. We also present the technique of rebatching to further reduce the bias and variance of our variance estimator. Second, we present two fully sequential indifference-zone procedures to select the best system from a number of competing simulated systems when best is defined by the maximum or minimum expected performance. These two procedures have parabola shaped continuation regions rather than the triangular continuation regions employed in several papers. The rocedures we present accommodate unequal and unknown ariances across systems and the use of common random numbers. However, we assume that basic observations are independent and identically normally distributed. Finally, we present procedures for finding a set of feasible or near-feasible systems among a finite number of simulated systems in the presence of multiple stochastic constraints, especially when the number of systems or constraints is large.
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Benedetti, Giacomo. „Studio modellistico di venografia con CO2 in procedure interventistiche degli arti superiori e definizione dei parametri di iniezione con iniettore Angiodroid“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
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L'uso dell’anidride carbonica (CO2) come mezzo di contrasto ha portato a numerose innovazioni nel campo della produzione di immagini angiografiche per l'indagine vascolare. Alcune procedure di angiografia del sistema venoso degli arti superiori, come la venografia per estrazione di elettrocateteri cardiaci o per lo studio della fistola arterovenosa per emodialisi, hanno visto il raggiungimento di risultati molto importanti utilizzando questo gas come mezzo di contrasto. Tali risultati, riportati in letteratura, sono legati prevalentemente all'utilizzo di sistemi di iniezione manuali con i quali non è possibile gestire correttamente i parametri di pressione e volume di iniezione del gas. Lo sviluppo dell’iniettore automatico Angiodroid® consente ora di iniettare CO2 in grandi volumi ed a pressioni elevate, garantendo flussi di iniezione costanti; esso non è tuttavia dotato di un protocollo standardizzato che descriva i parametri di pressione e volume per le iniezioni in tali procedure. L’obiettivo del presente lavoro di tesi è quello di provare a standardizzare i valori di iniezione per il sistema Angiodroid da usare nelle procedure di impianto ed estrazione di elettrocateteri impiantabili, e di angiografia della fistola arterovenosa. Il lavoro sarà articolato in due fasi: una prima fase di studio teorico dei principi dell'angiografia e delle proprietà della CO2, seguita dall'osservazione delle procedure interventistiche in sala operatoria, e da una seconda fase di studio modellistico sperimentale per la simulazione di iniezioni nelle due procedure. I risultati hanno permesso di evidenziare che parametri quali la resistenza dei cateteri usati e le pressioni intravascolari siano molto importanti da conoscere per eseguire una corretta iniezione di CO2: sfruttando tali informazioni, è stato possibile ottenere linee guida sul possibile utilizzo dell'iniettore Angiodroid in queste procedure, tali da poter evitare effetti clinici indesiderati salvaguardando il paziente.
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Aslam, Shagufta. „Robust testing procedures based on S-estimate for the dispersion parameter of univariate and multivariate normal distribution and for the two-way mixed effect models /“. Connect to Digital dissertations. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.
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Bendandi, Riccardo. „Messa a punto di una procedura sperimentale per valutare gli effetti dei parametri di processo sulle caratteristiche meccaniche di manufatti ottenuti per modellazione a deposizione fusa (FDM)“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4064/.
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Weegh, Nora [Verfasser], André [Akademischer Betreuer] Bleich und Christine [Akademischer Betreuer] Häger. „Voluntary wheel running as a parameter for evidence-based assessment of disturbed well-being during experimental procedures in single- and group-housed mice / Nora Weegh ; André Bleich, Christine Häger“. Hannover : Stiftung Tierärztliche Hochschule Hannover, 2019. http://d-nb.info/1201644062/34.
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Berny, Myriam. „High-temperature tests for ceramic matrix composites : from full-field regularised measurements to thermomechanical parameter identification“. Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST028.
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Cette thèse a pour objectif de développer une méthode de mesure de champs par corrélation d’images numériques (CIN) à haute température couplée à des mesures thermiques sur une éprouvette technologique en CMC sollicitée dans des conditions thermiques représentatives d’un environnement moteur et de mettre en place une méthodologie d’identification des propriétés thermiques et thermomécaniques du matériau, en quantifiant à chaque étape de la chaîne les incertitudes associées aux quantités d’intérêt et en les réduisant. Il a pour cela été nécessaire de traiter les défis inhérents à la CIN à chaud, que ce soit au niveau de l’acquisition des images (saturation, perte du contraste) ou de la mesure (artefacts dus à l’effet mirage, aussi appelé "brume de chaleur").Ces travaux ont ainsi donné lieu au développement d’un protocole d’étalonnage d’un banc multi-instrumenté par l’utilisation soit d’une mire in-situ, soit par auto-étalonnage en utilisant l’éprouvette elle-même et son environnement. Les mesures de déplacements 3D surfaciques (approches de stéréocorrélation globales) et les mesures thermiques ont permis de mettre en évidence ce phénomène de brume de chaleur. Des stratégies de régularisation spatiotemporelles des déplacements mesurés ont été proposées et ont permis d’obtenir des résultats satisfaisants (réduction significative des incertitudes de mesure). De même, des approches par réduction de modèles (POD) ont permis de traiter les données thermiques et de quantifier les incertitudes associées aux phénomènes convectifs. Enfin, un algorithme de recalage de modèle éléments finis pondéré sur les données de températures et de déplacements a été implémenté en vue d’identifier un ensemble de propriétés thermiques et thermomécaniques, en tenant compte de la sensibilité de chaque paramètre par rapport aux incertitudes de mesuresThe aim of this thesis is firstly to develop procedures of full-field measurements with Digital Image Correlation (DIC), coupled to thermal measurements, suitable for high-temperature experiments on CMC specimens under thermal conditions representative of an engine environment. Secondly, a methodology is proposed for identifying the thermal and thermomechanical properties of the material, quantifying at each stage of the chain the uncertainties associated with the quantities of interest and strategies to reduce them. It was necessary to deal with the challenges due to high temperatures, especially for DIC, either in terms of acquisition (saturation, loss of contrast) or measurement (artefacts due to the mirage effect, also called "heat haze effect").This work has led to the development of a calibration protocol for a multi-instrumented bench using either an in-situ calibration target or by self-calibration using the specimen itself and its environment. 3D surface displacement measurements (with global stereocorrelation approaches) and thermal measurements have made it possible to highlight the heat haze effect phenomenon. Spatiotemporal regularisation strategies of the measured displacements were proposed and allowed satisfactory results to be obtained (significant reduction of measurement uncertainties). Similarly, model reduction approaches (POD) have been used to process thermal data and quantify the uncertainties associated with convective phenomena. Finally, a weighted Finite-Element Model Updating (FEMU) algorithm on both temperature and displacement data was implemented in order to identify a set of thermal and thermomechanical properties, taking into account the sensitivity of each parameter with regard to measurement uncertainties
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Ainkaran, Ponnuthurai. „Analysis of Some Linear and Nonlinear Time Series Models“. University of Sydney. Mathematics & statistics, 2004. http://hdl.handle.net/2123/582.
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Abstract This thesis considers some linear and nonlinear time series models. In the linear case, the analysis of a large number of short time series generated by a first order autoregressive type model is considered. The conditional and exact maximum likelihood procedures are developed to estimate parameters. Simulation results are presented and compare the bias and the mean square errors of the parameter estimates. In Chapter 3, five important nonlinear models are considered and their time series properties are discussed. The estimating function approach for nonlinear models is developed in detail in Chapter 4 and examples are added to illustrate the theory. A simulation study is carried out to examine the finite sample behavior of these proposed estimates based on the estimating functions.
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Narreddy, Naga Sambu Reddy, und Tuğrul Durgun. „Clusters (k) Identification without Triangle Inequality : A newly modelled theory“. Thesis, Uppsala universitet, Institutionen för informatik och media, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-183608.
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Cluster analysis characterizes data that are similar enough and useful into meaningful groups (clusters).For example, cluster analysis can be applicable to find group of genes and proteins that are similar, to retrieve information from World Wide Web, and to identify locations that are prone to earthquakes. So the study of clustering has become very important in several fields, which includes psychology and other social sciences, biology, statistics, pattern recognition, information retrieval, machine learning and data mining [1] [2]. Cluster analysis is the one of the widely used technique in the area of data mining. According to complexity and amount of data in a system, we can use variety of cluster analysis algorithms. K-means clustering is one of the most popular and widely used among the ten algorithms in data mining [3]. Like other clustering algorithms, it is not the silver bullet. K-means clustering requires pre analysis and knowledge before the number of clusters and their centroids are determined. Recent studies show a new approach for K-means clustering which does not require any pre knowledge for determining the number of clusters [4]. In this thesis, we propose a new clustering procedure to solve the central problem of identifying the number of clusters (k) by imitating the desired number of clusters with proper properties. The proposed algorithm is validated by investigating different characteristics of the analyzed data with modified theory, analyze parameters efficiency and their relationships. The parameters in this theory include the selection of embryo-size (m), significance level (α), distributions (d), and training set (n), in the identification of clusters (k).
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Liu, Peng. „Adaptive Mixture Estimation and Subsampling PCA“. Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1220644686.
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Soják, Zbyněk. „Certifikační postupy pro experimentální letouny“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228076.
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Work includes certification procedures for experimental aeroplanes. Producer must answer individual work for right procedure certification. Office UCL give works and control production procedure aeroplane. Stationery (applications, confirmation, tec.) are part of work and is need make and feed. Part of work is VUT 001 MARABU and technical characteristics aeroplane.
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Festucci, Ana Claudia. „Eliminação de parâmetros perturbadores na estimação de tamanhos populacionais“. Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/4540.
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In this study, we used the capture-recapture procedure to estimate the size of a closed population. We analysed three di_erent statistics models. For each one of these models we determined - through several methods of eliminating nuisance parameters - the likelihood function and the pro_le, conditional, uniform integrated, Je_reys integrated and generalized integrated likelihood functions of the population size, except for the last model where we determined a function that is analogous to the conditional likelihood function, called integrated restricted likelihood function. In each instance we determined the respectives maximum likelihood estimates, the empirical con_dence intervals and the empirical mean squared errors of the estimates for the population size and we studied, using simulated data, the performances of the models.
Nesta dissertação utilizamos o processo de captura-recaptura para estimar o tamanho de uma população fechada. Analisamos três modelos estatísticos diferentes e, para cada um deles, através de diversas metodologias de eliminação de parâmetros perturbadores, determinamos as funções de verossimilhança e de verossimilhança perfilada, condicional, integrada uniforme, integrada de Jeffreys e integrada generalizada do tamanho populacional, com exceção do último modelo onde determinamos uma função análoga à função de verossimilhança condicional, denominada função de verossimilhança restrita integrada. Em cada capítulo determinamos as respectivas estimativas de máxima verossimilhança e construímos intervalos de confiança empíricos para o tamanho populacional, bem como determinamos os erros quadráticos médios empíricos das estimativas e estudamos, através de dados simulados, as performances dos modelos.
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Chaloupka, Martin. „Vliv účinků poddolování na volbu typu nosné konstrukce mostu v km 332,420 trati Dětmarovice - Č. Těšín“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225534.
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The aim of the master’s thesis was t odevelop alternative solutions supporting steel structure of the railway bridge on the undermined area. The range of single fields were chosen based on the location of existing substructures. Reducing the width of bridge openings were not allowed. Based on the geodetic survey plans were drawn up clear of the current state. On the basis of specifications for developing a detailed process was chosen variant Gerber’s beam reinforced with an arch in mean field. For this variant was performed structural analysis of the main parts of the main structure of the bridge, which was calculated with the effects of undermining. For variant Gerber’s beam were made clear drawings and drawing details of the selected steel bridge construction (new state). Further, detailed analysis of selected structural detail was made. Specifically, connecting rod to the main beam, which was designed optimal shape and thickness of the joints plate with a suitable radius of the firing to avoid plastification of the material in this area. Variant of the continuous beam without joints was prepared to. It has been observed, what is the effect of undermining on the stress in the construction of the bridge - was confronted with the effects on Gerber’s beam. To reduce stress in the construction of the bridge and compliance of ultimate state of applicability of the main beam has been designed bearing adjustment and after considering several options its implementation too. The economic comparison between the two variants was conducted. The assembling procedure was designed for both types of bridge structures. In the technical report we can read about due to the intention of building a new bridge and further we can find there other important technical information. In conclusion of the master’s thesis there has been recommended for the construction specific variant – from the perspective of an investor, and from the static aspect-view of the designer.
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Rava, Annalisa. „Sviluppo di una piattaforma software di Content Management System per la condivisone delle informazioni tecniche: il caso Bonfiglioli Riduttori S.p.A“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
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L’elaborato riporta un caso studio relativo all’azienda Bonfiglioli Riduttori S.p.A., presso cui si evince la necessità di garantire la condivisione delle informazioni di natura tecnica tra gli stabilimenti che appartengono alla Business Unit Mobility and Wind Industries.
L’azienda, come tante altre nel contesto attuale, ha intrapreso una strategia di delocalizzazione delle attività produttive e, per questo motivo, è composta da plants in diversi paesi nel mondo che spesso necessitano di comunicare tra loro.
L’obiettivo del progetto riguarda la creazione di una piattaforma di Content Management System che deve contenere tutte le documentazioni relative all’ingegneria di processo, con un focus sulle attività di assemblaggio. Con la realizzazione del database è possibile rimuovere alcune criticità presenti nella gestione dei documenti e ridurre i tempi dedicati a scambi informativi tra gli stabilimenti e il Global Process Engineering Department, team globale che funge da collegamento tra i plants. Le informazioni infatti sono presenti online ed è possibile consultarle in maniera autonoma, con la certezza di avere sempre accesso alla documentazione più aggiornata.
Il caso studio prevede un progetto pilota avviato presso l’ headquarter dell’unità di business considerata, per poi espandere la modalità di gestione della documentazione a tutti gli altri stabilimenti. Ogni plant deve quindi creare un sito web sulla piattaforma seguendo la struttura e la procedura identificata.
Il risultato è quello di avere alcune pagine online che contengono i dati e i file che si vogliono condividere con tutta la divisione, in un formato standard ed organizzati in modo che sia facile reperire l’informazione ricercata.
Oltre a questo, si definisce una procedura standard di gestione della documentazione aziendale, in linea con le specifiche definite dal Quality Management System, per fare in modo che, dopo la sua creazione, la piattaforma rimanga sempre aggiornata.
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Tardivel, Patrick. „Représentation parcimonieuse et procédures de tests multiples : application à la métabolomique“. Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30316/document.
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Considérons un vecteur gaussien Y de loi N (m,sigma²Idn) et X une matrice de dimension n x p avec Y observé, m inconnu, Sigma et X connus. Dans le cadre du modèle linéaire, m est supposé être une combinaison linéaire des colonnes de X. En petite dimension, lorsque n ≥ p et que ker (X) = 0, il existe alors un unique paramètre Beta* tel que m = X Beta* ; on peut alors réécrire Y sous la forme Y = X Beta* + Epsilon. Dans le cadre du modèle linéaire gaussien en petite dimension, nous construisons une nouvelle procédure de tests multiples contrôlant le FWER pour tester les hypothèses nulles Beta*i = 0 pour i appartient à [[1,p]]. Cette procédure est appliquée en métabolomique au travers du programme ASICS qui est disponible en ligne. ASICS permet d'identifier et de quantifier les métabolites via l'analyse des spectres RMN. En grande dimension, lorsque n < p on a ker (X) ≠ 0, ainsi le paramètre Beta* décrit précédemment n'est pas unique. Dans le cas non bruité lorsque Sigma = 0, impliquant que Y = m, nous montrons que les solutions du système linéaire d'équations Y = X Beta avant un nombre de composantes non nulles minimales s'obtiennent via la minimisation de la "norme" lAlpha avec Alpha suffisamment petitLet Y be a Gaussian vector distributed according to N (m,sigma²Idn) and X a matrix of dimension n x p with Y observed, m unknown, sigma and X known. In the linear model, m is assumed to be a linear combination of the columns of X In small dimension, when n ≥ p and ker (X) = 0, there exists a unique parameter Beta* such that m = X Beta*; then we can rewrite Y = Beta* + Epsilon. In the small-dimensional linear Gaussian model framework, we construct a new multiple testing procedure controlling the FWER to test the null hypotheses Beta*i = 0 for i belongs to [[1,p]]. This procedure is applied in metabolomics through the freeware ASICS available online. ASICS allows to identify and to qualify metabolites via the analyse of RMN spectra. In high dimension, when n < p we have ker (X) ≠ 0 consequently the parameter Beta* described above is no longer unique. In the noiseless case when Sigma = 0, implying thus Y = m, we show that the solutions of the linear system of equation Y = X Beta having a minimal number of non-zero components are obtained via the lalpha with alpha small enough
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Clark, Tad Dee. „An Analysis of Microstructure and Corrosion Resistance in Underwater Friction Stir Welded 304L Stainless Steel“. Diss., BYU ScholarsArchive, 2005. http://contentdm.lib.byu.edu/ETD/image/etd872.pdf.
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Lai, Kevin, und 來國彥. „Chinese Feature City Construction: A Procedural Content Generation and Editing Based on Parameters Control“. Thesis, 2019. http://ndltd.ncl.edu.tw/handle/29r644.
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碩士國立臺灣科技大學
資訊工程系
107
The digital content such as games, movies and cultural creations based on ancient Chinese literature and history, requires a large number of Chinese-style buildings and scenes. The structure of Chinese-style buildings is complex with polygons count much higher than European and modern buildings. In this research, we propose procedural techniques to generate Chinese-style buildings, towns and scenes flexibly and efficiently. In this paper, we develop a Chinese-style building construction system that allows users to quickly create Chinese-style buildings by manipulating parameters associated with template models such as Tented Roof, Hip Roof, Hip-and-gable roof, Mansard roof, and Gable Roof. And a Chinese town could be arranged by compiling these buildings. Each level of the building is divided into three parts: roof, body and platform. A novel three edges representation is proposed to draw the roof of the Chinese-style building, and then user adjusts the parameters of pillars to construct walls or gates between the pillars and generate the length, width and height of the body and platform. As experimental results show, our approcah could model almost all types of Chinese-style buildings. And, with parallax mapping, tessellation, and LOD techniques applied, our method can provide interactive frame rate for large amount of Chinese town with hundred of feature buildings.
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Steynberg, Joubert Casper. „Assessment of procedural parameters recorded following spinal anaesthesia for caesarean section at three academic hospitals in Gauteng“. Thesis, 2015. http://hdl.handle.net/10539/18475.
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A research report submitted to the Faculty of Health Sciences, University
of the Witwatersrand, in partial fulfilment of the requirements for the
degree
of
Master of Medicine in the branch of Anaesthesiology
Johannesburg, 2014Currently spinal anaesthesia is widely considered as the safest technique for caesarean section because the increased risk of failed intubation and aspiration associated with pregnant patients is avoided. In South Africa the latest confidential enquiry into maternal mortality for the triennium 2008 – 2010 showed that the maternal mortality rate due to anaesthesia is approximately 5 per 100 000 live births, and the majority (79%) occurred under spinal anaesthesia. This represents a high rate of maternal mortality due to anaesthesia, and particularly spinal anaesthesia, when compared to developed countries. Good anaesthetic records are vital in understanding why the maternal mortality rate due to anaesthesia is so high, and the parameters that are recorded following spinal anaesthesia has not been investigated in South Africa. The primary objectives of this study were to describe the demographics, essential procedural parameters, additional procedural parameters and the clinical parameters recorded following spinal anaesthesia for caesarean section. The secondary objectives of this study were to compare whether surgery being performed during the week or over the weekend, surgery being performed during the day or during the night, surgery being routine or an emergency or the category of anaesthetist influenced the parameters recorded. The research design used in this study was that of a retrospective, contextual, descriptive study. The study population was the anaesthetic records completed following spinal anaesthesia for caesarean section in the maternity theatres of Chris Hani Baragwanath Academic Hospital, Charlotte Maxeke Johannesburg Academic Hospital and Rahima Moosa Mother and Child Hospital. Consecutive convenience sampling was used to select 300 anaesthetic records to be enrolled into the study. Anaesthetic records at each hospital were reviewed from 30 June 2013 backwards until the required sample size for each hospital was reached. Records were enrolled into the study proportionally to the average number of caesarean sections performed at each hospital per month. The majority of records were completed during the week and during the night, most of these anaesthetic records were for emergency surgeries and most were completed by registrars. The study revealed that demographic data and identifying parameters were recorded thoroughly. Eight of the twelve essential procedural parameters were recorded adequately. From the twelve additional procedural parameters identified from the records only two were recorded adequately and from the five clinical parameters reviewed four were recorded acceptably. Records were found to be more comprehensive when completed during the week, when completed during the night, when completed for emergency surgery and when completed by a registrar.
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Chow, Shein-Chung. „Resampling procedures for the estimation of nonlinear functions of parameters“. 1985. http://catalog.hathitrust.org/api/volumes/oclc/13442383.html.
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Thesis (Ph. D.)--University of Wisconsin--Madison, 1985.Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 151-155).
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Lai, chung yei, und 賴聰毅. „Estimation of Parameters in a Multipath Signal Using Regression Stepwise Procedures“. Thesis, 1995. http://ndltd.ncl.edu.tw/handle/35487456768019525294.
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Chuang, Fu-Jen, und 莊福仁. „SCM 420 procedure parameter to influence on the carburization“. Thesis, 2010. http://ndltd.ncl.edu.tw/handle/78617615716253059742.
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碩士國立高雄第一科技大學
機械與自動化工程所
98
This experiment mainly aims at axis the locomotive chain link (pin); the material quality is SCM 420 carries on the cementation heat treatment in the heat-treatment furnace. Its cementation temperature for 870°C － 930°C, the soaking time is 45 minutes, C3H8 (propane) the gas flow amount respectively is 110 ml/min、115 ml/min、120 ml/min, the cooling oil temperature distinction are 30-35°C, 50-55°C carries on the gas carburizing heat treatment. Experimental result demonstration in cooling oil temperature 30-35°C: When the cementation temperature is 910°C, skin hardness HRa82.5, 83, 83.5, the each cementation zone depth respectively is 0.24mm, 0.25mm, 0.28mm. The Microstructure to 0.03mm has residual Austenite other for Martinet. When the cementation temperature is 920°C, skin hardness HRa83, the each cementation zone depth respectively is 0.30mm, 0.28mm, 0.31mm. The Microstructure to 0.03mm has residual Austenite other for Martinet Moreover, in cooling oil temperature 50-55°C: When the cementation temperature is 910°C, skin hardness HRa83, 83, 82.5, the each cementation zone depth respectively is 0.28mm, 0.28mm, 0.28mm. The Microstructure to 0.05mm has residual Austenite other for Martinet. When the cementation temperature is 920°C, skin hardness HRa82, 81.5, 81, the each cementation zone depth respectively is 0.28mm, 0.28mm, 0.31mm. The Microstructure to 0.13mm has residual Austenite other for Martinet. As result, with the production quality request, there are two groups of parameters enable to provide the production use. (1) cooling oil temperature 30-35°C with cementation hardening temperature 920°C, the soaking time 45 minutes, C3H8(propane) current capacity 120 ml/min. (2) cooling oil temperature 50-55°C with cementation hardening temperature 920°C, the soaking time 45 minutes, C3H8(propane) current capacity110 ml/min, enable to result in the quality effect.
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Sakthivel, Arunprasanth. „A systematic procedure to determine controller parameters for MMC-VSC systems“. 2016. http://hdl.handle.net/1993/31867.
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Modular multilevel converter type voltage source converter (MMC-VSC) is a potential candidate for present and future HVdc projects. The d-q decoupled control system is widely used to control MMC-VSC systems. Selection of PI-controller parameters for MMC-VSC systems is a challenging task as control loops are not completely decoupled. Since there is no widely accepted method to tune these control loops, the industry practice is to use the trial and error approach that requires a great amount of time. Therefore, it is required to develop a systematic procedure to tune PI-controllers considering necessary system dynamics and also to propose guidelines for control system design. This thesis introduces a systematic procedure to determine PI-controller parameters for the d-q decoupled control system. A linearized state-space model of an MMC-VSC system is developed to calculate the frequency-domain attributes. The control tuning problem is formulated as an optimization problem which is general and any meta-heuristic method can be used to solve the problem. In this thesis, the simulated annealing is applied to solve the problem. The efficacy of the tuned parameters is tested on the electromagnetic transient model of the test system on the real-time digital simulators (RTDS). In addition, it is shown that the proposed method is suitable to tune PI-controller parameters for MMC-VSC systems connected to strong as well as weak ac networks. Further, this thesis investigates the effects of d-q decoupled controller parameters, phase-locked loop (PLL) gains, and measuring delays on the stability and performance of the MMC-VSC test system. It is shown that the converter controllers have greater influence on the system stability and the impact of PLL gains is negligible unless very high PLL gains are used. In addition, the negative impact of measuring delays in instantaneous currents and voltages is also analysed by performing eigenvalue and sensitivity analysis. Finally, a set of guidelines for control design of MMC-VSC systems is summarized. In general, the proposed control tuning procedure would be useful for the industry to tune PI-controllers of MMC-VSC systems. Furthermore, the proposed methodology is generic and can be adapted to tune of any dynamic device in power systems.February 2017